nofollow

nofollow is a value that can be assigned to the rel attribute of an HTML a element to instruct some search engines that a hyperlink should not influence the link target's ranking in the search engine's index. It is intended to reduce the effectiveness of certain types of search engine spam, thereby improving the quality of search engine results and preventing spamdexing from occurring.


The nofollow value was originally suggested to stop comment spam in blogs. Believing that comment spam affected the entire blogging community, in early 2005 Google’s Matt Cutts and Blogger’s Jason Shellen proposed the value to address the problem.

rel="nofollow"

rel="nofollow" Action	Google	Yahoo!	Bing	Ask.com
Uses the link for ranking	No	No	No	?
Follows the link	No	Yes	?	No
Indexes the "linked to" page	No	Yes	No	No
Shows the existence of the link	Only for a previously indexed page	Yes	Yes	Yes
In results pages for anchor text	Only for a previously indexed page	Yes	Only for a previously indexed page	Yes

SEO Technology

SEO technology comes in several different varieties including coding, tools and applications, widgets and files. Using SEO technology to code a website properly is important so that search engine robots can properly crawl and index a website.

Perhaps the SEO technology that search engine optimizers use most are tools and applications for doing their jobs.






SEO toolbars, Wordpress plug-ins and back link checkers are some common bits of SEO technology needed in order to serve the client. There are many toolbars that work with either Internet Explorer and Firefox browsers that will scan a page and deliver results such as keyword density, back link information and ranking data just to name a few.

SEO technology really starts with the keyword research. Apps such as Wordtracker, Keyword Discovery, Google AdWords Keyword Tool and at one time the Overture Tool (before it took a dive) have all been valuable SEO technology for uncovering keywords that people use in their online searches.SEO technology that have become popular in the last few years. Widgets, if coded and promoted properly can be used as link bait to attract many links to a client site.

SEO technology has come a long way since the early days of keyword stuffing the meta tags and throwing a bunch of nonsensical text at the bottom of a page